<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
</head>

<body>
    <div id="root">
        <h2>人员列表</h2>
        <button @click="updataMei">更新马冬梅信息</button>
        <ul>
            <li v-for="item of persons" :key="item.id">
                {{item.name}}-{{item.age}}-{{item.sex}}
            </li>
        </ul>
    </div>
    <script>
        new Vue({
            el:"#root",
            data:{
                persons:[
                {id:'001',name:'马冬梅',age:30,sex:'女'},
                {id:'002',name:'周冬雨',age:35,sex:'女'},
                {id:'003',name:'周杰伦',age:18,sex:'男'},
                {id:'004',name:'温兆伦',age:15,sex:'男'},
                ]
            },
            methods: {
                updataMei(){
                    // this.persons[0].name = "马老师"//ok
                    // this.persons[0] = {id:'001',name:'马老师',age:32,sex:'女'}//不认可

                }
            },
        })
    </script>
</body>


</html>